SampleElements<UnhashableObject> unhashables = new Unhashables();
    Multimap<Integer, UnhashableObject> multimap = ImmutableMultimap.of(0, unhashables.e0());
    assertEquals(1, multimap.get(0).size());
    assertTrue(multimap.get(0).contains(unhashables.e0()));
  }

  public void testUnhashableMixedValues() {
    SampleElements<UnhashableObject> unhashables = new Unhashables();
    Multimap<Integer, Object> multimap =

 */

package com.google.common.collect.testing;

import com.google.common.annotations.GwtCompatible;
import com.google.common.collect.testing.SampleElements.Unhashables;
import java.util.Collection;
import java.util.List;

/**
 * Creates collections containing unhashable sample elements, to be tested.
 *
 * @author Regina O'Dell
 */
@GwtCompatible
@ElementTypesAreNonnullByDefault

 */

package com.google.common.collect.testing;

import com.google.common.annotations.GwtCompatible;
import com.google.common.collect.testing.SampleElements.Unhashables;
import java.util.Collection;
import java.util.List;

/**
 * Creates collections containing unhashable sample elements, to be tested.
 *
 * @author Regina O'Dell
 */
@GwtCompatible
@ElementTypesAreNonnullByDefault

  public E e2() {
    return e2;
  }

  public E e3() {
    return e3;
  }

  public E e4() {
    return e4;
  }

  public static class Unhashables extends SampleElements<UnhashableObject> {
    public Unhashables() {
      super(
          new UnhashableObject(1),
          new UnhashableObject(2),
          new UnhashableObject(3),
          new UnhashableObject(4),

  public E e2() {
    return e2;
  }

  public E e3() {
    return e3;
  }

  public E e4() {
    return e4;
  }

  public static class Unhashables extends SampleElements<UnhashableObject> {
    public Unhashables() {
      super(
          new UnhashableObject(1),
          new UnhashableObject(2),
          new UnhashableObject(3),
          new UnhashableObject(4),

}

type T struct {
	a, b int
	c    []int
}

func test5() {
	defer mustRecover("uncomparable")
	var x T
	var z interface{} = x
	println(z != z)
}

func test6() {
	defer mustRecover("unhashable type main.T")
	var x T
	var z interface{} = x
	m := make(map[interface{}]int)
	m[z] = 1
}

func test7() {
	defer mustRecover("divide by zero")
	var x, y int
	println(x / y)

 * limitations under the License.
 */

package com.google.common.collect.testing;

import com.google.common.annotations.GwtCompatible;
import org.checkerframework.checker.nullness.qual.Nullable;

/**
 * An unhashable object to be used in testing as values in our collections.
 *
 * @author Regina O'Dell
 */
@GwtCompatible
public class UnhashableObject implements Comparable<UnhashableObject> {
  private final int value;

        expectedHashCode,
        getList().hashCode());
  }

  /**
   * Returns the {@link Method} instance for {@link #testHashCode()} so that list tests on
   * unhashable objects can suppress it with {@code FeatureSpecificTestSuiteBuilder.suppressing()}.
   */
  @J2ktIncompatible
  @GwtIncompatible // reflection
  public static Method getHashCodeMethod() {

        expectedHashCode,
        getSet().hashCode());
  }

  /**
   * Returns the {@link Method} instances for the test methods in this class which call {@code
   * hashCode()} on the set values so that set tests on unhashable objects can suppress it with
   * {@code FeatureSpecificTestSuiteBuilder.suppressing()}.
   */
  @J2ktIncompatible
  @GwtIncompatible // reflection
  public static Method[] getHashCodeMethods() {

		// typehash, but we want to report the topmost type in
		// the error text (e.g. in a struct with a field of slice type
		// we want to report the struct, not the slice).
		panic(errorString("hash of unhashable type " + toRType(t).string()))
	}
	if isDirectIface(t) {
		return c1 * typehash(t, unsafe.Pointer(&a.data), h^c0)
	} else {
		return c1 * typehash(t, a.data, h^c0)
	}
}